Centrifugal water motor



April 20 1926.

W. T. NICHOLLS CBNTRIFUGAL f WATER MOTOR Filed Nov. '7, 1924 Patented apro 2Q, i925.

asentar WILLIAM T. NICI-IOLLS,

CENTREFUGAL .application filed November To all ywhom t may concern:

Be. it known that l', YWiimniiu T. NicnoLLs, a citizen ot the United States, and a resident ot Farber, in the county of .ludrain and `State ot Missouri, have in- `vented a new and useful Centrifugal later Motor, which invention is tully described in the following specilication.

My invention has for its object to provide an ei'iicient high speed water motor that may be made at a lowcost or' production. The constructions embodying my invention are provided with a pair of confined spiral blades or wings so formed and positioned that they are acted on and react upon the moving water te produce rotation relative to each other. In the preferred construction, the blades are formed o t extended spiral strips, one secured to the wall of the rotatable tubular mem ber and the other secured toa lined cylindrical member located within and coaxial with the tubular men'iber, and having a relatively large diameter. Constructions containing the invention iray be varied in their lorin and to illustrate a practical application ot the invention l have selected a structure containing the invention as an example ot such structures and shall describe it hereinafter. riihe structure selected is shown in the accompanying drawings. 1

Figure l ot the drawings illustrates a side view and a section ot the water motlor selected. Figure 2 illustrates a side View ot an end portion ot the motor. Figure 3 illustrates a sectional view taken on the line 3 3 indicated in Fig. l.

ln the form ot construction shown, the water motor is provided with a tubular member l that has a length considerably greater than the `diameter. rfhe tubular member may be supported either in a horizontal position or in a vertical position. ln the torni ol construction shown it is supported in a horizontal position in the frame Q, having` bearing parts or flanges 3, while the tubular member l is provided with collars 4. also having suitable bearing parts. rlhe rollers 5 may be located between the collars et and the flanges to reduce the triction. Also balls @may be located between one of the collars 4 and the frame 2 to provide for the end thrust cause-d by the pressure of the water on parts of the tubular member l which constitutes the rotor of the motor.

OF FAR-EER, IVIISSGUR.

WATER MOTOR.

i, 19%4. Serial No. 748,359.

The rotor is connected with a source of supi The two are connected together by HlllS 0f I a connector 9 having suitable backing means such as the washer l0 ot iibrous material for smiling the connection between the two. The connector 9 is bolted to the end of the pip-e 7. The other end oit' the rotor is provided with a shell 1l having openings l2 that torni `the outlet for the rotor. rlhe shell il is preferably dome-shaped and is secured at its edges to the ends ot the. tubulr member l. .lhe outer-end of the shell is keyed to a driving shaft 13. Tiny suitable mechanical elements may be connected to the driving shaft for transmission of the power ot the motor. lfnrthe drawings isV shown a worm let that drives a worm wheel l5.

fthe tubular member is provided with a spiral vane 16 that extends troni one end to the other end of the tubular member and within the annular region occupied by the spiral vane i6 is located a second spiral vane l?. The spiral vanes are of opposite pitch and so mounted as to be rotatable one relative to the other.v Preferably the inner spiral vane 17 is connected to a tired member 18 that extends throughout the length ot the tubular member l. The memberllS is secured in position at one end by means ot a spider l0 that may be secured by the bolts 20 used ttor bolting the. connector 9 to the end ot the pip-e 7. The other end ot' the member 1S is located within the outer endy oi the shell ll. lit desired, a ball 2l may be located between the end ot the member 18 aud the shaft 13. The member 18 may be made solid or it may be hollow to reduce its weight., since it is preferably so iiorn'ied as to have considerable diameter to take up a relatively large area within the tiibular member l. The vanes 1G and 17 in the construction shown have the same pitch but this may be varied as may be desired.

T he water enters under pressure through the pipe line that terminates at the motor in' a pipe. having a. diameter substantially the same as that ot the rotor, but the passageway kinto the rot-or, is limitedv by the vane 17 Where its direction of rotation will be reversed. Its onward spiral movement due to the head of the water and the pitch of the inner vane being the same or substantially the saine as that of the outer vane, and the external diameter being much smaller than the external diameter of the Outer vane, the rate of rotation Will increase and the said portion oi Water will move into the region ot the outer vane Where it will strike the vane at such an angle astoy trasmit all its energy to the outeryvane and move with the vane until practically all of its kinetic energy has been transmitted to the rotor and until that portion of the water is substantially dead as compared to the movement ot the rotor. Thus the n'ioveinent ot the water between the regions of the inner and outer vanes may be repeated provided the tubular member is of sutlicient length. The central spiral keeps the Water whirling and moving at such an angle to the outer vane that its kinetic energy Will most effectively be transmitted to the rotor oi' the motor. Also the friction of the Whirling Water on the inner surface of the rotor and itscvane will cause the transmission of energy of one to the other.

l. In a hydraulic motor, in combination a tubular rotor, a pair ot spiral vanes movable relative to each other and located one within the other to direct the Water from one to the other, one ot the vanes connected to the rotor, means for supporting the other rane, a pipe communicating with the source et supply and having a cross sectional area larger than that ol thc cross sectional area of the annular region in which the spiral connected to the rotor is located.

2. In a hydraulic motor, in combination a tubular rotor, a pair et' spiral vanes movable relative to each other and located one Within theV other to direct the Water from one to the other; one of the vanes connected to the rotor, a pipe communicating with the source of supply and having a cross sectional area larger than that of the cross' sectional area ot the annular region in which the spiral connected to the rotor is located, a bar having a relatively large diameter extending through the rotor and connected to a fixed part of the motor, the other of the said vanes connected to the said bar.

In testimony Whereolc I have hereunto signed my name to this specification.

l/VILLIAM T. NICHOLLS. 

